How do I select an acceleration solution? - Object Storage Service

You can use the transfer acceleration feature, Alibaba Cloud CDN, or the OSS accelerator feature to accelerate access to Object Storage Service (OSS) resources. This topic describes the features, scenarios, and advantages and disadvantages of different acceleration solutions.

Acceleration solution	Feature	Scenario	Advantage	Disadvantage
Transfer acceleration	OSS uses data centers that are distributed around the world to perform transfer acceleration. When a request to access your bucket is sent, the request is parsed and routed to the data center where the bucket is located over the optimal network path and protocol. The transfer acceleration feature provides an optimized end-to-end acceleration solution for access to OSS over the Internet.	Accelerate remote data transfer Accelerate uploads and downloads of gigabyte-size and terabyte-size objects Accelerate the download of dynamic and non-hot data	OSS buckets are distributed across the world. Transfer accelerationaccelerates the upload and download of long-distance and large objects.	All access requests are redirected to OSS, which consumes the bandwidth of OSS. When a large number of users in the same region access resources at the same time, the transfer accelerationperformance is not as good as that of Alibaba Cloud CDN acceleration.
Alibaba Cloud CDN acceleration	Alibaba Cloud CDN caches static data stored in OSS on points of presence (POPs) that are distributed around the world. When customers access OSS data, data is served from the POPs to accelerate access.	Accelerate the download of static and hot data Accelerate on-demand audio and video streaming Accelerate the delivery of small files on websites and applications	Alibaba Cloud CDN POPs are distributed across the world. Alibaba Cloud CDN POPs provide high bandwidth.	The cache hit ratio is high for resources that are frequently accessed and low for resources that are infrequently accessed. If resources are not cached on POPs, access to the resources is redirected to OSS by using back-to-origin links over the Internet. The accelerationperformance is not as expected for dynamic requests, such as object upload and deletion.
OSS accelerator	The OSS accelerator feature provides high-performance and high-throughput data access services by storing data on high-performance media.	Low-latency data sharing Big data analysis Simulated training Multi-level acceleration	The OSS accelerator feature can effectively reduce data access latency. The OSS accelerator feature ensures strong consistency between data and OSS. You do not need to worry about cache eviction.	Data writes cannot be accelerated. If the size of data to be written is too large, the acceleration performance of access to OSS resources is reduced. The minimum cache capacity that an accelerator can provide is very large. You can use the OSS accelerator feature only in specific regions by submitting a ticket.